That sounds good. I like putting reminders in my phone so I can delete them when I've done them and see the list getting smaller and smaller. Ticking off things can be good too, maybe your whiteboard would allow you to see what you achieve. I think it's important to acknowledge the things that you achieve that you might not have written on a whiteboard, also. The small things, they are great achievements too.
Do you think going to college will make your life feel like it has a bit of a point at least? Try to use the support services at college if they would help with things.